On diocesan priests wearing fascias with cassocks

[Salient]

I’m having trouble finding an authoritative source or document regarding priests being allowed to wear a fascia with a cassock. There seems to be some dispute that only priests with jurisdiction, i.e. a pastor, may wear a black fascia. According to my research, this seems either outdated or never established as a rule or even a custom.
Per Instructionem (1970) only mentions only that fascias with tassels are abolished for clerics.

In short, can anyone assist me in providing a primary source proving that a diocesan priest may wear a black fascia with his cassock?

Thanks.

 

[ctb95]

I’ve seen many priests wear fascias with cassocks.

Hardly an authoritative source, but here’s Wikipedia:
en.m.wikipedia.org/wiki/Fascia_(sash

 

[pianistclare]

I’m having trouble finding an authoritative source or document regarding priests being allowed to wear a fascia with a cassock. There seems to be some dispute that only priests with jurisdiction, i.e. a pastor, may wear a black fascia. According to my research, this seems either outdated or never established as a rule or even a custom.
Per Instructionem (1970) only mentions only that fascias with tassels are abolished for clerics.

In short, can anyone assist me in providing a primary source proving that a diocesan priest may wear a black fascia with his cassock?

Thanks.

Just curious, what do you intend to do with the info once you obtain it?